The issue
On certain vehicles, the internal rubber check valve inside the Bendix SR-7 spring brake modulating valve can become deformed over time. The effect of this defect is intermittent and presents a potential delay or failure in applying the parking brakes; potentially resulting in a vehicle roll away. Should this occur, the unattended roll away vehicle could strike a bystander or cause property damage. Correction: Dealers will install a check valve repair kit, and replace the Parker single check valve.
Description (français)
Sur certains véhicules, le clapet antiretour en caoutchouc à l'intérieur du modulateur de frein à ressort SR-7 de Bendix peut se déformer avec le temps. L'effet de ce défaut est intermittent et peut provoquer un délai d'application des freins de stationnement ou empêcher cette application; une telle situation pourrait entraîner la mise en mouvement du véhicule qui, si laissé sans surveillance, pourrait heurter un passant ou provoquer des dommages matériels. Correction : Les concessionnaires devront poser un nécessaire de réparation de clapet antiretour, et remplacer le clapet de non retour Parker.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Mack CHN | 2006, 2007 |
| Mack CHU | 2008 |
| Mack CTP | 2006, 2007, 2008 |
| Mack CV | 2006, 2007, 2008 |
| Mack CXN | 2006, 2007, 2008 |
| Mack CXP | 2007 |
| Mack CXU | 2008 |
| Mack GU | 2008 |
| Mack MR | 2007 |
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CHN | 2006 | 0 | 13 |
| Mack CHN | 2007 | 1 | 12 |
| Mack CHU | 2008 | 0 | 8 |
| Mack CTP | 2006 | 0 | 4 |
| Mack CTP | 2007 | 0 | 6 |
| Mack CTP | 2008 | 0 | 2 |
| Mack CV | 2006 | 0 | 5 |
| Mack CV | 2007 | 0 | 8 |
| Mack CV | 2008 | 0 | 3 |
| Mack CXN | 2006 | 0 | 13 |
| Mack CXN | 2007 | 0 | 14 |
| Mack CXN | 2008 | 0 | 5 |
| Mack CXP | 2007 | 0 | 6 |
| Mack CXU | 2008 | 0 | 7 |
| Mack GU | 2008 | 0 | 9 |
| Mack MR | 2007 | 0 | 3 |